Home / 12,929.90-19,391.81-8,243.03

Finding the Fourth Proportional to 12,929.90, 19,391.81 and 8,243.03

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Solution

The fourth proportional to 12,929.90, 19,391.81 and 8,243.03 is: 12,362.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.90 : 19,391.81 = 8,243.03 : x
  2. Step 2: Convert to fraction form
    12,929.90/19,391.81 = 8,243.03/x
  3. Step 3: Cross multiply
    12,929.90x = 19,391.81 × 8,243.03
  4. Step 4: Simplify right side
    12,929.90x = 159,847,278.85
  5. Step 5: Solve for x
    x = 159,847,278.85/12,929.90
  6. Step 6: Final answer
    x = 12,362.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.